Schneider RPF2BBD High-Current Plug-in Power Relay

Series: RPF (Zelio Harmony) Power Relay, Model: RPF2BBD

✅ Model Code Explanation

RPF: RPF series high-current plug-in relay

2: 2CO (DPDT, Double Pole Double Throw)

B: Coil voltage 24VDC

BD: Version without LED indicator

📋 Core Electrical Specifications

Item	Specifications
Coil	24VDC, coil power consumption 1.7W, coil resistance 350Ω @20℃
Contacts	2CO (DPDT), Silver Tin Oxide contacts (AgSnO₂)
Rated Switching Current	30A (with spacing between relays); 25A when mounted side-by-side tightly
Contact Voltage	250VAC / 250VDC
Minimum Switching Load	170mW, minimum switching voltage 17V, minimum current 10mA
Impulse Withstand Voltage	4kV
Protection Class	IP40 (relay body)
Mounting Method	DIN rail mounting / panel screw mounting, dual-purpose
Pins	8-pin flat quick connect, pluggable, compatible with base
Operating Temperature	-40℃ ~ +70℃
Certifications	UL, CSA, EN, IEC

📌 Structure & Features

High load capacity: 30A high current, used for PLC output current amplification, fans, heaters, solenoid valves and other inductive/resistive loads; widely applied in HVAC and industrial cabinets.
Plug-in design: Relay body can be pulled out from the base for easy maintenance and replacement; Matching base model: RPZF2.
No LED indicator: RPF2BBD without coil LED indicator; LED version: RPF2BED.
Compact housing, built-in DIN rail latch + panel mounting holes, dual mounting compatible.
Non-latching type; contacts reset when coil de-energized.

🧰 Typical Application Scenarios

HVAC: Control of fans, electric heaters and water pumps

Industrial automation control cabinets: PLC output power expansion

Switching high-power circuits for air compressors, packaging machinery and conveyors

High-power load switches inside control cabinets

⚠️ Selection & Installation Notes

Derating requirement: When multiple relays are mounted side-by-side tightly, rated contact current is derated to 25A; a 13mm gap between relays is required to reach full 30A rating.
For inductive loads (motors, contactor coils), surge suppression components are recommended in parallel to extend contact life.
Base must be RPZF2, RXM small relay bases cannot be used interchangeably.
Distinguish suffix codes:

RPF2BBD: 24VDC, no LED

RPF2BED: 24VDC, with LED

RPF2BB7: 24VAC coil version

🔁 Alternative Models

Original Schneider alternatives

RPF2BED (24VDC with LED, fully pin-compatible)

Domestic compatible 8-pin high power relays

Hongfa HF116F-2, OMRON G7L-2A-BUB. For domestic substitution, verify current rating, coil voltage and pin layout.

📦 Packaging

Standard packing: 10 pcs/box

Schneider RPF2BBD (2CO 30A, DC24V, No LED) Application Scenarios

Core positioning: Plug-in high-power relay for PLC output amplification, 2CO contacts, 24VDC coil, max 30A (with gap), derated to 25A when side-by-side installed. Base RPZF2, DIN rail / panel dual mounting, wide temperature range -40~+55℃, suitable for high-power load switching inside industrial cabinets.

HVAC & Building Air Conditioning (Most Common Application)
Central air handling units (AHU): Control of fans, electric heating sections, humidifiers and condensate pumps
Heat pump units & constant temperature/humidity control cabinets: Auxiliary compressor circuits, high-power actuating for water valves
Fresh air purification units: Start/stop of large supply & exhaust fans, DO point amplification for building BA systems

Advantages: 24VDC coil matches DDC controllers; 2CO contacts can control main power circuit and feedback signal simultaneously. Wide temperature range suits machine rooms and outdoor cabinets.

Industrial Automation Control Cabinets
PLC digital output amplification: PLC DO points normally rated 0.5~2A. RPF2BBD drives 30A resistive/inductive loads and isolates strong/weak current to protect PLC modules. One set of 2CO contacts for main load, the other for passive status feedback to PLC DI.
Packaging machines, conveyor lines, assembly equipment: Control of heavy-duty conveyor belts, drying heating tubes and large solenoid valve banks
Control cabinets for air compressors & chillers: Cooling fans, drain pumps and heater on/off
Hydraulic/pneumatic stations: Auxiliary control of high-current solenoid directional valves and hydraulic pumps
Building Automation
Building distribution panels: High-power lighting circuits, exhaust fans, sewage pumps and fire supply air fans
UPS machine room power cabinets: Fans, heaters and dehumidifier control
Commercial equipment control cabinets: Commercial ovens, drying equipment and high-power resistive heating loads
New Energy & Energy Storage Auxiliary Systems
Energy storage BMS cabinets: Switching of cooling fans, cabin heaters and dehumidification loads
Auxiliary loads of small PV combiner boxes: Fans and anti-condensation heating circuits
Special Equipment (Wide Temperature Advantage)
Onboard / mobile equipment, construction machinery electrical cabinets: -40℃ cold start, withstand wide temperature shock
Marine auxiliary machinery control cabinets (select with marine certifications): Cabin fans and pump loads

✅ Selection & Application Tips (Scenario Reminders)

Load types: Resistive loads preferred. For inductive loads such as motors and contactor coils, surge suppression (RC snubber / diode / varistor) must be fitted; otherwise contact service life will drop sharply.
Current derating: When multiple RPF relays are closely mounted side-by-side, use 25A as rated current; reserve ≥13mm gap between relays to achieve full 30A.
2CO (DPDT) feature: One contact set for main power circuit, the other for passive status feedback. This is the key advantage over RPF2ABD (2NO), ideal for automation systems requiring relay status acquisition.
No LED: Suitable for cabinet interiors where visual coil status indication is not required. Choose RPF2BED if LED indicator is needed.
Base mounting: RPZF2 base is mandatory; RXM small relay bases cannot be used. Plug-in design enables fast on-site replacement.

❌ Not Recommended Applications

Direct switching of main circuit for three-phase high-power motors (use contactors for motor main circuits; RPF only for auxiliary control)

Applications with extremely frequent switching cycles (limited contact life)

Loads exceeding 30A

Complete Technical Specifications of Schneider RPF2BBD (Harmony RPF Plug-in Power Relay)

Model: RPF2BBD｜2CO (DPDT), 24VDC coil, No LED indicator, No test button, matched base RPZF2

Coil Parameters (Control Side DC24V)

Item	Specifications
Rated coil voltage Uc	24VDC
Coil operating voltage range	19.2～26.4 VDC (80%～110%Un)
Coil power consumption	1.7W
Coil resistance	350Ω (@20℃, ±10%)
Drop-out voltage	0.1×Uc (≈2.4VDC)
Operation type	Non-latching; auto-reset upon de-energization

Contact Parameters (Load Side 2CO Changeover Contacts)

Item	Specifications
Contact configuration	2CO / DPDT Double Pole Double Throw
Contact material	AgSnO₂ Silver Tin Oxide (arc resistant)
Rated resistive current	30A (≥13mm gap between relays); 25A when tightly side-by-side mounted
Max switching voltage	AC250V / DC250V
Max switching capacity	7500VA (AC) / 700W (DC)
Minimum switching load	170mW, min voltage 17V, min current 10mA
Rated insulation voltage Ui	250V (IEC); 300V (UL)

Life & Operating Characteristics

Item	Specifications
Mechanical life	5,000,000 cycles
Electrical life (resistive load)	100,000 cycles
Max operating frequency (with load)	≤1200 cycles/hour; no-load ≤18000 cycles/hour
Rated impulse withstand voltage Uimp	4kV (1.2/50μs)
Dielectric strength	Coil to contact: 4000VAC; Between poles: 2000VAC; Across open contacts:1500VAC

Environmental & Mechanical Parameters

Item	Specifications
Operating ambient temperature	-40℃ ～ +55℃
Protection class	IP40 (relay body)
Mounting method	DIN rail / panel screw mounting dual-purpose
Pin type	8-pin flat Faston quick terminals
Overall dimensions	W33.7mm × H68.5mm × D39.2mm
Net weight	82g
Pollution degree	3, Overvoltage category RT II
Mounting orientation	Any orientation permitted